My sister Ai has been working really hard every day until late for the upcoming prefectural tournament. Well, now that she's grown up, I don't talk to her face-to-face anymore, but yes. As her brother, I've been dotting on her to some extent since way back. Such a cute little sister started getting hit on by Mizuguchi, the ultimate playboy in my class, around this summer. Without my knowledge, he gradually developed her innocent, developing body...
